71565340 has 48 divisors (see below), whose sum is σ = 187375104. Its totient is φ = 22305600.

The previous prime is 71565283. The next prime is 71565353. The reversal of 71565340 is 4356517.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21696 + ... + 24775.

It is an arithmetic number, because the mean of its divisors is an integer number (3903648).

Almost surely, 2^71565340 is an apocalyptic number.

71565340 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

71565340 is an abundant number, since it is smaller than the sum of its proper divisors (115809764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71565340 is a wasteful number, since it uses less digits than its factorization.

71565340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46498 (or 46496 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 31.

The square root of 71565340 is about 8459.6300155503. The cubic root of 71565340 is about 415.1779176161.

The spelling of 71565340 in words is "seventy-one million, five hundred sixty-five thousand, three hundred forty".